Python, Selenium : 'Element is no longer attached to the DOM'

I am scraping a website, www.lipperleaders.com. I want to extract the funds detail of Singapore. I have successfully implemented drop-down selection and extracted the content of the first page appearing after submission of the options. But when I try to go to next pages (by making the code to click next button) I am getting error

'Element is no longer attached to the DOM'

.

My code is about 100 lines but I can give a general idea of the flow of execution of my code: